React Controlled vs Uncontrolled Components Explained

Stop nesting your async calls in React! 🛑 Using async/await within a clean useEffect structure (or a custom hook) keeps your code readable, maintainable, and much easier to debug. What's your biggest React pet peeve? 👇 #ReactJS #CleanCode #JavaScript #softwaredevelopment #React

⚛️🚀Building reusable components is one of the best ways to write cleaner, scalable React code. In my latest blog, I break down how I created a dynamic, beginner‑friendly button component that adapts based on props—no more repeating the same markup. From conditional rendering to flexible class handling, this approach keeps your UI consistent and efficient. A great starting point for anyone improving their React workflow! https://lnkd.in/djJWMbZj #ReactJS #WebDevelopment #FrontendDev #ReusableComponents #JavaScript #CleanCode #ReactTips #TailwindCSS #CodingJourney #SoftwareEngineering

React Performance: Slow vs Fast We often write components that “work” — but are they optimized? 🔴 Slow Approach - Recalculates on every render - Creates new functions repeatedly - No memoization Result: ~2.5s render time 🟢 Fast Approach - Uses "useMemo" for expensive calculations - Prevents unnecessary re-renders - Cleaner & optimized logic Result: ~0.2s render time 💡 Key Takeaway: Small optimizations like memoization can make a HUGE difference in performance and user experience. Write smarter, not just working code. #ReactJS #FrontendDevelopment #WebPerformance #JavaScript #CodingTips #DevLife

💡 𝗧𝗶𝗽 𝗼𝗳 𝘁𝗵𝗲 𝗗𝗮𝘆 — 𝗥𝗲𝗮𝗰𝘁 𝗡𝗮𝘁𝗶𝘃𝗲 (𝗣𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲) 𝗗𝗶𝗱 𝘆𝗼𝘂 𝗸𝗻𝗼𝘄? In React Native, 𝗿𝗲-𝗿𝗲𝗻𝗱𝗲𝗿𝘀 𝗰𝗮𝗻 𝗰𝗮𝘀𝗰𝗮𝗱𝗲 𝘁𝗵𝗿𝗼𝘂𝗴𝗵 𝘆𝗼𝘂𝗿 𝗰𝗼𝗺𝗽𝗼𝗻𝗲𝗻𝘁 𝘁𝗿𝗲𝗲 𝗶𝗳 𝗽𝗿𝗼𝗽𝘀 𝗮𝗿𝗲 𝘂𝗻𝘀𝘁𝗮𝗯𝗹𝗲. Passing new object/array/function references on every render can cause child components to re-render—even when nothing actually changed. 🔧 𝗕𝗲𝘀𝘁 𝗽𝗿𝗮𝗰𝘁𝗶𝗰𝗲: - Memoize values with "useMemo" - Memoize functions with "useCallback" - Use "React.memo" for pure components Stable references = fewer unnecessary renders. #ReactNative #MobileDevelopment #PerformanceOptimization #JavaScript #AppDevelopment #SoftwareEngineering #CodingTips #React #FullstackDeveloper

📌 Part 8 of 10: A lot of React bugs make more sense once you realize state behaves more like a snapshot than a live variable. That idea sounds small. But once it clicks, a lot of confusing behavior starts making more sense. Why logs can feel misleading. Why updates don’t look immediate. Why handlers sometimes “see” older values than people expect. Once I really understood that, I stopped fighting React as much. I started designing with it instead. What React concept took longer to click for you than expected? #React #ReactJS #StateManagement #JavaScript #FrontendDevelopment #Debugging #TypeScript

Why does React say: "Don't call hooks conditionally"? 🤔 Let’s break it down simply. React doesn’t track hooks by name. It tracks them by order. Every render, React just walks through hooks like this: 1st hook → 2nd hook → 3rd hook That’s it. No labels. No IDs. Just position. Now imagine this 👇 if (condition) { useEffect(() => { // do something }); } 👉 First render: Hook1 → Hook2 → Hook3 👉 Next render (condition = false): Hook1 → Hook3 Now React gets confused 😵 It expects Hook2… but suddenly sees Hook3. This breaks the internal hook mapping — and boom 💥 unexpected bugs or crashes. 👉 The rule exists because hooks must run in the same order on every render. That’s why: ❌ No hooks inside conditions ❌ No hooks inside loops ❌ No hooks inside nested functions 👉 Always call hooks at the top level. Once you understand this, React hooks feel much less “magical” and more predictable. #ReactJS #JavaScript #FrontendDevelopment #WebDevelopment #LearnInPublic

Today I learned about Conditional Rendering in React. Conditional rendering allows us to display different UI elements based on conditions. For example: A user logged in → Show dashboard A user not logged in → Show login button While fetching data → Show loading text React uses methods like ternary operators, && operator, and if-else conditions to handle this. This helps in building dynamic and interactive user interfaces. Up Next: Lists & Keys 👀 React Series – Day 7 🚀 #ReactJS #LearningInPublic #WebDevelopment #FrontendDeveloper #JavaScript #100DaysOfCode

Avoid Unnecessary Re-renders in React Many React applications become slow not because of bad logic, but because of unnecessary re-renders. To understand this better, I prepared a short PDF explaining: -Memoization in React -useMemo vs useCallback vs React.memo -When optimization is useful -When memoization actually makes performance worse -Best practices for real projects Always remember: Measure first, optimize later. Sharing this guide for developers who want to improve React performance. #ReactJS #FrontendDeveloper #CleanCode #PerformanceOptimization #JavaScript

🎯 useEffect vs useLayoutEffect: finally made it clear While learning React hooks, I was confused between useEffect and useLayoutEffect. This visual helped me understand the real difference 👇 👉 useLayoutEffect 1. Runs synchronously 2. Executes before the browser paints the UI 3. Useful when you need to measure or update the DOM before it becomes visible 👉 useEffect 1. Runs asynchronously 2. Executes after the UI is painted 3. Best for API calls, timers, subscriptions, etc. 💡 Key takeaway: 1. useLayoutEffect → blocks paint (use carefully) 2. useEffect → doesn’t block UI (preferred in most cases) Also learned how cleanup (destroy/unmount) works to avoid memory leaks especially with intervals and API calls. Small concepts like this make a big difference in writing better React code #ReactJS #WebDevelopment #Frontend #JavaScript #LearningInPublic #ReactHooks

💡 𝗧𝗶𝗽 𝗼𝗳 𝘁𝗵𝗲 𝗗𝗮𝘆 — 𝗥𝗲𝗮𝗰𝘁 𝗗𝗶𝗱 𝘆𝗼𝘂 𝗸𝗻𝗼𝘄? In React, 𝗲𝘃𝗲𝗻𝘁 𝗵𝗮𝗻𝗱𝗹𝗲𝗿𝘀 𝗿𝗲𝗰𝗲𝗶𝘃𝗲 𝗮 𝘀𝘆𝗻𝘁𝗵𝗲𝘁𝗶𝗰 𝗲𝘃𝗲𝗻𝘁, 𝗻𝗼𝘁 𝘁𝗵𝗲 𝗻𝗮𝘁𝗶𝘃𝗲 𝗯𝗿𝗼𝘄𝘀𝗲𝗿 𝗲𝘃𝗲𝗻𝘁. React wraps native events in a 𝗦𝘆𝗻𝘁𝗵𝗲𝘁𝗶𝗰𝗘𝘃𝗲𝗻𝘁 to ensure consistent behavior across browsers. 🔧 𝗪𝗵𝘆 𝘁𝗵𝗶𝘀 𝗺𝗮𝘁𝘁𝗲𝗿𝘀: - You get a unified API regardless of the browser - But the event object may be 𝗽𝗼𝗼𝗹𝗲𝗱 𝗮𝗻𝗱 𝗿𝗲𝘂𝘀𝗲𝗱 𝗕𝗲𝘀𝘁 𝗽𝗿𝗮𝗰𝘁𝗶𝗰𝗲: If you need to access the event asynchronously, store needed values immediately. Understanding this helps avoid subtle bugs. #React #ReactJS #FrontendDevelopment #JavaScript #WebDevelopment #SoftwareEngineering #CodingTips #BestPractices #FullstackDeveloper